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Brain: Dentatothalamic tract
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Latin	tractus dentatothalamicus
Gray's	subject #
Part of
Components
Artery
Vein
BrainInfo/UW	hier-525
MeSH	[1]

The dentatothalamic tract (or dentatorubrothalamic tract) is a tract which connects the dentate nucleus and the thalamus while sending collaterals to the red nucleus.^[1]

The term "dentatorubrothalamocortical" is sometimes used to emphasize termination in the cerebral cortex.^[2]

See also[]

.

References[]

↑ Motor Systems
↑ Boiten J, Lodder J (February 1990). Ataxic hemiparesis following thalamic infarction. Stroke 21 (2): 339–40.

External links[]

Krauss JK, Wakhloo AK, Nobbe F, Tränkle R, Mundinger F, Seeger W (December 1995). Lesion of dentatothalamic pathways in severe post-traumatic tremor. Neurol. Res. 17 (6): 409–16.
NIF Search - Dentatothalamic Tract via the Neuroscience Information Framework
http://isc.temple.edu/neuroanatomy/lab/atlas/papc/

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Human brain, rhombencephalon, metencephalon: cerebellum (TA 14.1.07, GA 9.788)

Surface anatomy

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Lobes

Anterior lobe
Posterior lobe
- Horizontal fissure
Flocculonodular lobe
- Flocculus
- Nodule

Primary fissure

Medial/lateral

Vermis: anterior
- Central lobule
- Culmen
- Lingula
posterior
- Folium
- Tuber
- Uvula
Vallecula of cerebellum

Hemisphere: anterior
- Alar central lobule
posterior
- Biventer lobule
- Cerebellar tonsil

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Deep cerebellar nuclei

Cerebellar cortex

Molecular layer
- Stellate cell
- Basket cell

Purkinje cell layer
- Purkinje cell
- Bergmann glia cell = Golgi epithelial cell

Granule cell layer

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Internal

Arbor vitae

Peduncles

Middle (pons): Pontocerebellar fibers

Superior (midbrain): Ventral spinocerebellar tract
Dentatothalamic tract
Trigeminocerebellar fibers

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Human brain: diencephalon (TA A14.1.08, GA 9.807)


Surface	Pineal body · Habenula · Habenular trigone · Habenular commissure
Grey matter	Pretectal area · Habenular nuclei · Subcommissural organ

Surface

Stria medullaris of thalamus · Thalamic reticular nucleus · Taenia thalami

Grey matter/
nuclei

paired: AN · Ventral (VA/VL, VP/VPM/VPL) · Lateral (LD, LP, Pulvinar) · Metathalamus (MG, LG)

midline: MD · Intralaminar (Centromedian) · Midline nuclear group · Interthalamic adhesion

Mammillothalamic fasciculus · Pallidothalamic tracts (Ansa lenticularis, Lenticular fasciculus, Thalamic fasciculus) · PCML (Medial lemniscus, Trigeminal lemniscus) · Spinothalamic tract · Lateral lemniscus · Dentatothalamic tract · Acoustic radiation · Optic radiation · Subthalamic fasciculus · Anterior trigeminothalamic tract

Medullary laminae

Surface

Median eminence/Tuber cinereum · Mammillary body · Infundibulum

Autonomic zones

Anterior (parasympathetic/heat loss) · Posterior (sympathetic/heat conservation)

posterior pituitary: magnocellular/Paraventricular/Supraoptic (oxytocin/vasopressin)

other: parvocellular/Arcuate (dopamine/GHRH) · Preoptic (GnRH) · Suprachiasmatic (melatonin)

Lateral (hunger) · Ventromedial (satiety) · Dorsomedial (rage)

afferent (SN → Medial forebrain bundle) · efferent (Mammillothalamic fasciculus → AN, Stria terminalis → Amygdala, Dorsal longitudinal fasciculus → SC)

Posterior is diencephalon, but anterior is glandular

Subthalamic nucleus · Zona incerta

Ventricular system:
Third ventricle

recesses: (Optic recess, Infundibular recess, Suprapineal recess, Pineal recess)

Hypothalamic sulcus · Tela chorioidea of third ventricle

Subfornical organ

Apertures: Interventricular/Monro

Posterior commissure

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Brain and spinal cord: neural tracts and fasciculi

Sensory/
ascending

1°: Pacinian corpuscle/Meissner's corpuscle → Gracile fasciculus/Cuneate fasciculus → Gracile nucleus/Cuneate nucleus

2°: → sensory decussation/arcuate fibers (Posterior external arcuate fibers, Internal arcuate fibers) → Medial lemniscus/Trigeminal lemniscus → Thalamus (VPL, VPM)

3°: → Posterior limb of internal capsule → Postcentral gyrus

Anterolateral/
pain

Fast/lateral

1° (Free nerve ending → A delta fiber) → 2° (Anterior white commissure → Lateral and Anterior Spinothalamic tract → Spinal lemniscus → VPL of Thalamus) → 3° (Postcentral gyrus) → 4° (Posterior parietal cortex)

2° (Spinotectal tract → Superior colliculus of Midbrain tectum)

Slow/medial

1° (Group C nerve fiber → Spinoreticular tract → Reticular formation) → 2° (MD of Thalamus) → 3° (Cingulate cortex)

Motor/
descending

Pyramidal

flexion: Primary motor cortex → Posterior limb of internal capsule → Decussation of pyramids → Corticospinal tract (Lateral, Anterior) → Neuromuscular junction

flexion: Primary motor cortex → Genu of internal capsule → Corticobulbar tract → Facial motor nucleus → Facial muscles

flexion: Red nucleus → Rubrospinal tract

extension: Vestibulocerebellum → Vestibular nuclei → Vestibulospinal tract

extension: Vestibulocerebellum → Reticular formation → Reticulospinal tract

Midbrain tectum → Tectospinal tract → muscles of neck

direct: 1° (Motor cortex → Striatum) → 2° (GPi) → 3° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 4° (Thalamocortical radiations → Supplementary motor area) → 5° (Motor cortex)

indirect: 1° (Motor cortex → Striatum) → 2° (GPe) → 3° (Subthalamic fasciculus → Subthalamic nucleus) → 4° (Subthalamic fasciculus → GPi) → 5° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 6° (Thalamocortical radiations → Supplementary motor area) → 7° (Motor cortex)

nigrostriatal pathway: Pars compacta → Striatum

Afferent

Vestibular nucleus → Vestibulocerebellar tract → ICP → Cerebellum → Granule cell

Pontine nuclei → Pontocerebellar fibers → MCP → Deep cerebellar nuclei → Granule cell

Inferior olivary nucleus → Olivocerebellar tract → ICP → Hemisphere → Purkinje cell → Deep cerebellar nuclei

Efferent

Dentate nucleus in Lateral hemisphere/pontocerebellum → SCP → Dentatothalamic tract → Thalamus (VL) → Motor cortex

Interposed nucleus in Intermediate hemisphere/spinocerebellum → SCP → Reticular formation, or → Cerebellothalamic tract → Red nucleus → Thalamus (VL) → Motor cortex

Fastigial nucleus in Flocculonodular lobe/vestibulocerebellum → Vestibulocerebellar tract → Vestibular nucleus

Bidirectional:
Spinocerebellar

Unc. prop.

lower limb → 1° (muscle spindles → DRG) → 2° (Posterior thoracic nucleus → Dorsal/posterior spinocerebellar tract → ICP → Cerebellar vermis)

upper limb → 1° (muscle spindles → DRG) → 2° (Accessory cuneate nucleus → Cuneocerebellar tract → ICP → Anterior lobe of cerebellum)

lower limb → 1° (Golgi tendon organ) → 2° (Ventral/anterior spinocerebellar tract→ SCP → Cerebellar vermis)

upper limb → 1° (Golgi tendon organ) → 2° (Rostral spinocerebellar tract → ICP → Cerebellum)

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anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

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proc, drug (N1A/2AB/C/3/4/7A/B/C/D)

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M: PNS

anat(h/r/t/c/b/l/s/a)/phys(r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

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